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fwupd/plugins/altos
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Richard Hughes 104f651132 Add a fu_plugin_usb_device_added() dedicated vfunc 
This saves all the USB plugins from connecting to the context and managing the
device lifecycle and allows devices that uses FuUsbDevice to be removed
automatically.

This makes supported plugins *much* smaller indeed.
2017-11-24 16:13:44 +00:00
..
data Add support for flashing the ChaosKey 2017-01-09 12:21:35 +00:00
fu-altos-device.c Add FuUsbDevice helper object 2017-11-24 14:04:51 +00:00
fu-altos-device.h Add FuUsbDevice helper object 2017-11-24 14:04:51 +00:00
fu-altos-firmware.c Remove the ELF support from libdfu and move the code to the altos plugin 2017-09-07 18:39:23 +01:00
fu-altos-firmware.h Remove the ELF support from libdfu and move the code to the altos plugin 2017-09-07 18:39:23 +01:00
fu-altos-tool.c altos: Rename FuDeviceAltos to FuAltosDevice 2017-11-13 13:58:37 +00:00
fu-plugin-altos.c Add a fu_plugin_usb_device_added() dedicated vfunc 2017-11-24 16:13:44 +00:00
meson.build altos: Rename FuDeviceAltos to FuAltosDevice 2017-11-13 13:58:37 +00:00
README.md Add support for flashing the ChaosKey 2017-01-09 12:21:35 +00:00

README.md

Altos Support

Introduction

Altos is a 8051 operating system for Altus-Metrum projects. The ChaosKey is a hardware random number generator that attaches via USB.

When the ChaosKey when inserted it appears as a device handled by the kernel with VID 0x1d50 and PID 0x60c6. If pins 1 and 5 are shorted as the device is connected then the bootloader is run, which presents VID 0xfffe and PID 0x000a.

The bootloader communication is not handled in the kernel, and a tty device is created so userspace can communicate with the hardware. Commands the bootloader accept are as follows:

List Information

Command: l\n Several lines of text about the device are transferred to the host, e.g.

altos-loader
manufacturer     altusmetrum.org
product          AltosFlash
flash-range      08001000 08008000
software-version 1.6.8

There doesn't appear to be any kind of end-of-message signal.

Read Flash

Command: R $addr\n where $addr is a memory address 0x8001000->0x8008000. 256 bytes of raw data are then transferred to the host.

Write Flash

Command: W $addr\n where $addr is a memory address 0x8001000->0x8008000. 256 bytes of raw data are then transferred to the device.

Application Mode

Command: v\n The device will reboot into application mode. This is typically performed after flashing firmware completes successfully.